Who plays that little girl on the cosby show?

The character of Rudy Huxtable on "The Cosby Show" is played by actress Keshia Knight Pulliam. She was one of the youngest members of the cast and became well-known for her role throughout the show's run from 1984 to 1992. Keshia Knight Pulliam has since had a successful career in acting and has appeared in various films and television series.